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Fossil specimen : BGS GSM30721 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Mollusca

    Class Cephalopoda

      Order Ammonitida

Fossil Name Pavlovia pallasioides Neaverson
Type Status Holotype
Name History

Pavlovia pallasioides Neaverson

Holcosphinctes pallasioides Neaverson

Registration No. GSM30721
Collector Name not available
Donor or Associated Person Smythe Mrs 1850
Held By British Geological Survey Logo British Geological Survey
Country England
Locality Hartwell - Bucks.
Grid Reference Not available
Rock Unit Hartwell Clay
Biozone pallasioides
Geological Age

Kimmeridgian Age (Jurassic Period) (152.1 – 157.3 Ma B.P.)


Arkell. 1933. Jurassic System p.464

Cope. 1978. Palaeontology. 21 p.501

Horton et al. 1995. Geology of the Country Round Thame. Memoir of the British Geological Survey 11 3

Mem Geol Surv. 1895. Rocks of Britain p.156 72

Neaverson. 1925. Papers of Geol Dept University Liverpool p.36 III fig 5 B10

Available Images

High resolution photographs


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Steroscopic photographs


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3D Scans

1: /BGS/GSM_30721

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